Record Display for the EPA National Library Catalog


OLS Field Name OLS Field Data
Main Title Improved techniques for residual ozone
Author Gordon, Gilbert. ; Grunwell, J. F.
Other Authors
Author Title of a Work
Grunwell, Joyce.
CORP Author Miami Univ., Oxford, OH.;Municipal Environmental Research, Cincinnati, OH.
Publisher U.S. Environmental Protection Agency, Municipal Environmental Research Laboratory ;
Year Published 1984
Report Number EPA-600/2-84-036;PB84-151224; EPA-R-806302
Stock Number PB84-151224
OCLC Number 15641157
Subjects Water--Purification--Ozonization
Additional Subjects Ozone ; Water analysis ; Water pollution ; Disinfectants ; Chemical analysis ; Ozonization ; Concentration(Composition) ; Oxidizers ; Industrial wastes ; Sewage ; Potable water ; Oxidation reduction reactions ; Chemical reaction mechanisms ; Iodometric method
Library Call Number Additional Info Location Last
EMBD  PB84-151224 MF NRMRL/GWERD Library/Ada,OK 09/10/1988
NTIS  PB84-151224 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 01/01/1988
Collation x, 77 p. : ill. ; 28 cm.
Eight analytical methods for the determination of residual ozone in water are evaluated. Four are iodometric methods based on the reduction of ozone by iodide ion: the iodometric method, the amperometric method, the arsenic (III) back titration method, and the N, N-diethyl-p-phenylenediamine (DPD) method. Four are non-iodometric methods: the indigo method, the arsenic (III) direct oxidation method, the Delta electrode, and the direct measurement of ultraviolet absorption at 259 nm. Two or more analytical methods are compared by simultaneous measurement of the decay curve of ozone in water. This kinetic technique allows a direct comparison of methods under conditions of rapidly changing ozone concentration. The mechanism of ozone decay is discussed. Four exploratory methods based on new ozone-reductant reactions are discussed: the chlorite ion method, the iodate method, the iron (II) terpyridine method, and the cerium method. The failure of these potential new methods is traced.
"January 1984." "EPA-600/2-84-036." "PB84-151224."